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https://issues.apache.org/jira/browse/LUCENE-8300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16495286#comment-16495286
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ASF subversion and git services commented on LUCENE-8300:
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Commit 083dc0811bd44fe434ecaaad892383d48a17d2a8 in lucene-solr's branch 
refs/heads/branch_7x from [~romseygeek]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=083dc08 ]

LUCENE-8300: Allow unordered intervals to exclude overlaps


> Add unordered-distinct IntervalsSource
> --------------------------------------
>
>                 Key: LUCENE-8300
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8300
>             Project: Lucene - Core
>          Issue Type: New Feature
>            Reporter: Alan Woodward
>            Assignee: Alan Woodward
>            Priority: Major
>         Attachments: LUCENE-8300.patch, LUCENE-8300.patch
>
>
> [~mattweber] pointed out on LUCENE-8196 that {{Intervals.unordered()}} 
> doesn't check to see if its subintervals overlap, which means that for 
> example {{Intervals.unordered(Intervals.term("a"), Intervals.term("a"))}} 
> would match a document with {{a}} appearing only once.  This ticket will 
> introduce a new function, {{Intervals.unordered_distinct()}}, that ensures 
> that all subintervals within an unordered interval do not overlap.



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